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<div class="titlepage"><div><div><h5 class="title">
<a name="spirit.karma.quick_reference.primitive_generators.boolean"></a><a class="link" href="boolean.html" title="Boolean Generators">Boolean
          Generators</a>
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<div class="informaltable"><table class="table">
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                    <p>
                      Expression
                    </p>
                  </th>
<th>
                    <p>
                      Attribute
                    </p>
                  </th>
<th>
                    <p>
                      Description
                    </p>
                  </th>
</tr></thead>
<tbody>
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<td>
                    <p>
                      <a class="link" href="../../reference/numeric/boolean.html" title="Boolean Generators (bool_)"><code class="computeroutput"><span class="identifier">lit</span><span class="special">(</span><span class="identifier">num</span><span class="special">)</span></code></a>
                    </p>
                  </td>
<td>
                    <p>
                      <code class="computeroutput"><span class="identifier">Unused</span></code>
                    </p>
                  </td>
<td>
                    <p>
                      Generate <code class="computeroutput"><span class="identifier">num</span></code>
                    </p>
                  </td>
</tr>
<tr>
<td>
                    <p>
                      <a class="link" href="../../reference/numeric/boolean.html" title="Boolean Generators (bool_)"><code class="computeroutput"><span class="identifier">bool_</span></code></a>
                    </p>
                  </td>
<td>
                    <p>
                      <code class="computeroutput"><span class="keyword">bool</span></code>
                    </p>
                  </td>
<td>
                    <p>
                      Generate a boolean
                    </p>
                  </td>
</tr>
<tr>
<td>
                    <p>
                      <a class="link" href="../../reference/numeric/boolean.html" title="Boolean Generators (bool_)"><code class="computeroutput"><span class="identifier">bool_</span><span class="special">(</span><span class="identifier">b</span><span class="special">)</span></code></a>
                    </p>
                  </td>
<td>
                    <p>
                      <code class="computeroutput"><span class="keyword">bool</span></code>
                    </p>
                  </td>
<td>
                    <p>
                      Generate <code class="computeroutput"><span class="identifier">b</span></code>
                      as a boolean, if an attribute is supplied it must match
                    </p>
                  </td>
</tr>
<tr>
<td>
                    <p>
                      <a class="link" href="../../reference/numeric/boolean.html" title="Boolean Generators (bool_)">
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">bool_generator</span><span class="special">&lt;</span>
    <span class="identifier">B</span><span class="special">,</span> <span class="identifier">Policies</span>
<span class="special">&gt;()</span></pre>
                      </a>
                    </p>
                  </td>
<td>
                    <p>
                      <code class="computeroutput"><span class="identifier">B</span></code>
                    </p>
                  </td>
<td>
                    <p>
                      Generate a boolean of type <code class="computeroutput"><span class="identifier">B</span></code>
                    </p>
                  </td>
</tr>
<tr>
<td>
                    <p>
                      <a class="link" href="../../reference/numeric/boolean.html" title="Boolean Generators (bool_)">
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="identifier">bool_generator</span><span class="special">&lt;</span>
    <span class="identifier">B</span><span class="special">,</span> <span class="identifier">Policies</span>
<span class="special">&gt;()(</span><span class="identifier">b</span><span class="special">)</span></pre>
                      </a>
                    </p>
                  </td>
<td>
                    <p>
                      <code class="computeroutput"><span class="identifier">B</span></code>
                    </p>
                  </td>
<td>
                    <p>
                      Generate a boolean <code class="computeroutput"><span class="identifier">b</span></code>
                      as a <code class="computeroutput"><span class="identifier">B</span></code>, if
                      an attribute is supplied it must match
                    </p>
                  </td>
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<td align="right"><div class="copyright-footer">Copyright © 2001-2011 Joel de Guzman, Hartmut Kaiser<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
      </p>
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